The top guide has a tool-free flip feature that allows easy access to your chain for cleaning and maintenance

They succeeded in this by using a tough as nails Nylon Composite body

Stuffability: Pocketable

Bearing Preload Adjuster to suit SRAM BB30-PF30 bottom brackets

Enduro CXD 6903 17mm x 30mm x 7mm Hub Bearing - 17mm - 30mm - 7mm - ABEC-5 Ceramic Radial Bearing Envelope Shipping The top guide has aCXD 6903 LLB XD 15 Ceramic Hybrid, ABEC 5, Radial Bearing (CN clearance) 17 x 30 x 7mm The ultimate upgrade An Enduro Bearings exclusive, our XD 15 Ceramic Hybrid bearings combine corrosion proof, cryogenically treated nitrogen steel races with Silicon Nitride Grade 3 ceramic balls in a proprietary process that results in the ultimate high performance bearing setup. The deep groove design raceways allow for maximum sized Grade 3 Silicon Nitride